Reminiscing Revealed

On March 20, the Signal Tribune asked readers if they remember anything about the photo above.
Long Beach resident Deanna Nickell-Roe wrote in and said:
I couldn’t believe it when I saw this picture. Most of the people are my relatives.
1. Myrtle Allen, my grandmother
2. Cecil “Dale” Allen, my uncle
3. Ola Doss, my aunt
4. Jim doss, my uncle,
and even though only their backs are showing in the picture, I know for sure that
5. Ona Nickell, my mother
6. Hazel Coach, my aunt
7. Dee Nickell, my father
8. (standing) Raymond “Speck” MacPherson, family friend
Myrtle Allen is the mother of Dale, Ola, Jim, Hazel and Dee.
I’m guessing this picture was taken around 1946/1947. I am basing this on the age of my Uncle Dale, who appears to be around 17 years old (he was born in 1929). I would have been five, maybe six, years old at the time. I was born in 1941.
I don’t know where this was taken or what the occasion was. Others look familiar to me, but I can’t put a name to them.